Hi Harry, kernel test robot noticed the following build warnings: [auto build test WARNING on drm/drm-next] [also build test WARNING on drm-exynos/exynos-drm-next drm-misc/drm-misc-next linus/master v6.12-rc1 next-20241004] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Harry-Wentland/drm-Add-helper-for-conversion-from-signed-magnitude/20241004-040629 base: git://anongit.freedesktop.org/drm/drm drm-next patch link: https://lore.kernel.org/r/20241003200129.1732122-30-harry.wentland%40amd.com patch subject: [PATCH v6 29/44] drm/amd/display: Add support for sRGB EOTF in BLND block config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20241005/202410052046.3g21jba1-lkp@xxxxxxxxx/config) compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241005/202410052046.3g21jba1-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202410052046.3g21jba1-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_color.c:1296:46: warning: variable 'blend_size' is uninitialized when used here [-Wuninitialized] 1296 | return __set_input_tf(NULL, tf, blend_lut, blend_size); | ^~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_color.c:1278:21: note: initialize the variable 'blend_size' to silence this warning 1278 | uint32_t blend_size; | ^ | = 0 1 warning generated. Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for MODVERSIONS Depends on [n]: MODULES [=y] && !COMPILE_TEST [=y] Selected by [y]: - RANDSTRUCT_FULL [=y] && (CC_HAS_RANDSTRUCT [=y] || GCC_PLUGINS [=n]) && MODULES [=y] vim +/blend_size +1296 drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_color.c 1273 1274 struct dc_transfer_func *tf = &dc_plane_state->blend_tf; 1275 struct drm_colorop *colorop = colorop_state->colorop; 1276 struct drm_device *drm = colorop->dev; 1277 const struct drm_color_lut *blend_lut; 1278 uint32_t blend_size; 1279 1280 if (colorop->type != DRM_COLOROP_1D_CURVE && 1281 colorop_state->curve_1d_type != DRM_COLOROP_1D_CURVE_SRGB_EOTF) 1282 return -EINVAL; 1283 1284 if (colorop_state->bypass) { 1285 tf->type = TF_TYPE_BYPASS; 1286 tf->tf = TRANSFER_FUNCTION_LINEAR; 1287 return 0; 1288 } 1289 1290 drm_dbg(drm, "Blend colorop with ID: %d\n", colorop->base.id); 1291 1292 if (colorop->type == DRM_COLOROP_1D_CURVE) { 1293 tf->type = TF_TYPE_DISTRIBUTED_POINTS; 1294 tf->tf = amdgpu_colorop_tf_to_dc_tf(colorop_state->curve_1d_type); 1295 tf->sdr_ref_white_level = SDR_WHITE_LEVEL_INIT_VALUE; > 1296 return __set_input_tf(NULL, tf, blend_lut, blend_size); 1297 } 1298 1299 return -EINVAL; 1300 } 1301 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
